English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We report the results of XMM-Newton observations of the regions around thecore of the Centaurus cluster where evidence for merging activity between thesubgroup Cen 45 and the main Centaurus cluster has previously been observedusing ASCA and ROSAT data. We confirm the ASCA findings of a temperature excesssurrounding Cen 45. We find that this temperature excess can be explained usingsimple shock heating given the large line of sight velocity difference betweenCen 45 and the surrounding main Centaurus cluster. We find that there is astatistically significant excess in metallicity around Cen 45, showing that Cen45 has managed to retain its gas as it has interacted with the main Centauruscluster. There is a pressure excess to the east in the direction of the merger,and there is also an entropy excess around the central galaxy of Cen 45. Themetallicity between 50-100 kpc to the north of NGC 4696 is higher than to thesouth, which may be the result of the asymmetric distribution of metals due toprevious sloshing of the core, or which may be associated with the filamentarystructure we detect between NGC 4696 and NGC 4696B.

An XMM-Newton view of the merging activity in the Centaurus cluster